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Old Sep 25, 2001, 11:17 AM
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Rockingham, Perth - Western Australia
Joined Apr 2001
615 Posts
This kit is marketed by Oatley Electronics as a 200A controller, but Silicon Chip ran the article as a 50A continuous controller(tested):



Silicon Chip - May 2000 - "50A Model Motor Speed Controller - With Brakes", Page 78

50A continuous rating, 1 x MPT2955 (Brake) + 5 x IRFZ44 (Power)

Voltage drop at 50A = 0.28v (worked using IRFZ44 datasheet, SC magazine claims 0.24v)

At 50A this controller has to dissipate approx. 14 Watts of heat, quite a lot without heatsinks.
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